It's been a while, but scsi disk mode is triggered by the type of scsi cable/adapter plugged into the PowerBook. Mine all had switches on them, but I believe if not, then you need a non disk mode adapter. Chuck Kenney Sent from my iPhone On Mar 25, 2010, at 12:53 PM, Ward Curry <wardc at mac.com> wrote: > I am trying to re-install the system software on a PowerBook 2400c. > I just purchased an external SCSI CD-ROM drive off eBay for this > purpose. I have a connection cable and a terminator on the other > SCSI port. Every time I try to boot holding down the "C" key it > comes up in SCSI disk mode with a "2" flashing across the screen. > How do I get it to boot off the CD-ROM? I have an OS 8.1 system > software disk I am using, I just can't get it to boot off the CD-ROM. > > Much help would be appreciated. > > Thanks! > _______________________________________________ > DuoList mailing list > DuoList at listserver.themacintoshguy.com > http://listserver.themacintoshguy.com/mailman/listinfo/duolist